Rated 5 out of 5 stars

i am not able to use this what can i do

This review is for a previous version of the add-on ( 

It is a cell-phone icon in the lower right-hand corner. (It has a red "no" symbol on it when it is off.) If you click on that it will turn on, and if you click it again it will turn back off. (Though you will need to reload the page to see the difference.)If you still cannot find it, go to the menu View --> Toolbars and make sure that Add-on Bar is checked.Sorry that it is hard to find, in the next release it will be a lot easier.